<!DOCTYPE html>
<html>
  <body>
    <form action="/release/add" method="POST">
      <input type="hidden" name="mediums.0.track.0.length" value="4:195:0" />
      <input type="hidden" name="mediums.0.track.1.length" value=":10" />
      <input type="hidden" name="mediums.0.track.2.length" value="4:60" />
      <button type="submit">Submit</button>
    </form>
  </body>
</html>
